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AMD FX 8350 Core frequency Issue

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December 16, 2012 4:28:58 AM

Hey there, i recently noticed a drastic decrease FPS while gaming, When i diagnosed the problem i noticed that my CPU cores were switching to a frequency of around 1.4 ghz instead of the stock 4 ghz that the 8350 is supposed to run at.

i cant seem to find any posts online about this particular issue, so im posting it here.

Does anyone have any idea what might be causing this to happen?

This is my Build:
-AMD FX 8350
-Asus Crosshair V formula
-Asus Radeon 6970
-16GB Corsair DDR3 Ram part number CMZ16XM4A1600C9
-Corsair H100 cooler
-Corsair HX 850W PSU

Many Thanks in Advance
a b à CPUs
December 16, 2012 5:22:32 AM

Your CPU might be defective or the cooler on it isn't up to spec.
- Can you get a replacement/refund?
December 16, 2012 5:36:19 AM

i was afraid that it might be a defective.

i dont think its the cooler as the cpu Idles around 40C and never goes above 60C on at full load.

What seems to be happening is the frequency multiplier is randomly going down to 7 from 20, then it will go back up for a few seconds and then go back down to 7.

thanks for the reply


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a b à CPUs
December 16, 2012 6:11:25 AM
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what motherboard are you using and have you updated the bios?

the fluctuation your seeing is the power saving and temperature control built into the cpu. The options in the bios are C1E, cool n quiet, and c6.

Disable those might help, but the chip is designed to run at a maximum of 60c, if your idling at 40, thats pretty high, especially with the h100. reseat the cpu cooler and make sure the pump is running, should be between 20-30c.

December 16, 2012 6:25:01 AM

Ok i disabled all those features in the bios and the frequencies seem to be running stable. thanks heaps for that.

my Mobo is the Asus Crosshair V formula http://www.asus.com.au/Motherboards/AMD_AM3Plus/Crossha...

Now that you mention it, my bios is also out of date.

i think the reason for higher temps at the moment is its currently summer in Australia and its rather hot. either way if the temps remain high on a cool day ill reseat the cooler.

thanks heaps for the help

December 16, 2012 6:25:17 AM

Best answer selected by Bouskinthor.
a b à CPUs
December 16, 2012 6:31:15 AM

no problem, Asus does a great job at actually disabling those features. I had a gigabyte, with those disabled would still fluctuate.

p.s., knida funny mentioning summer time there, its winter here :) 
a b à CPUs
December 16, 2012 6:59:20 AM

I know how you feel about the temps in Aus man, I'm literally baking in my room which is 20 degrees hotter than the rest of my house...
a b à CPUs
December 16, 2012 7:15:11 AM

This is fully normal and should happen.
The CPU is throttling down when it isn't at full load.

Try running something like IntelBurnTest and then watching the frequency.
If it isn't working at 4GHZ during the test THEN there is a problem.
a b à CPUs
December 16, 2012 7:36:31 AM

Yep AUS temps can be a bitch, i recently had to give up playing farcry3 through the middle of the day due to ambient heat (i dont have any air con) and a built of siberian husky hair in my 360 Rad (filters don't seen to stop husky fur) and i've been lazy and havent cleaned it yet
December 16, 2012 7:50:36 AM

Kamen_BG said:
This is fully normal and should happen.
The CPU is throttling down when it isn't at full load.

Try running something like IntelBurnTest and then watching the frequency.
If it isn't working at 4GHZ during the test THEN there is a problem.



yeah ill try this, before i decide officially tick this problem as solved.

thanks for all the help
!